Answer:
They all contain a transparent part with at least one curved surface that reflects light.
Explanation:
When a new technology is introduced, there is geo-testing performed to see how this new extraction method effects the environment. The over all effects and efficiency are what should determine the acceptance of these solutions.
the answer is 6969696969696969696969696 bum bum sduigfsduhfgszuigfzsughfhgdfu\gdf dyfgilsugf
